Nailing-machine.



H.. W. YORK. muuue MACHINE. APPLICATION FILED SEPT. 14, I914. 1,171,685. Patented Feb.15,1916.-

2 SHEETS-SHEET 1,

V Y INVENTOR, WITNE5$E$= Henry W York g ATTORNEY.

THE COLUMBIA- Wmll 00-, WASHINGTON. D- C H. W.'YORK.

NAILING MACHINE.

APPLICATION FILED SEPT. 14, 1914. 1,171,685; 7

Patented Feb. 15, 1916.

2 SHEETS-SHEET 2.

WITNESSES mzz IN V EN TOR. Henry W York ATTORNEY.

"UNITED STATES PATENTOFFICE.

HENRY W. YORK, OF-sAN rmmcrsco, CALIFORNIA.

MAILING-MACHINE.

To all whom it may concern Be it known that I, HENRY W. YORK, a citizen of the United States, residing at San Francisco, in the county of San Francisco and State of California, have invented'new and useful Improvements in Nailing-Machines, of which the following is a specification.

The present invention relates to anailing machine, the object of the invention being to provide amachine by which nails can be automatically set in position and maintained therein while the necessary force is applied thereto to drive them into the wood.

The invention has been specially designed for the purpose of nailing hard wood floors, but it'is capable of other uses.

In the accompanying drawings, Figure l is a broken plan view of the machine; Fig. 2 is a side view thereof; Fig. 3 is a broken front view thereof; Fig. 4 is a sectional View of the nailing guide detached; Fig. 5 is a plan view of the nail guide detached.

Referring to the drawings, 1 indicates a nailing guide the lower end of which is supported upon the floor, and 2 indicates standards the lower ends of which are forked and rest upon shafts 3 of rollers 4. Said standards and nailing guide are secured to, and support, a rectangular skeleton frame 6, and said standards are extended upwardly above said frame to support a magazine 7, for containing nails. Said magazine has a movable inclined support 8, pivoted at 9 to the bottom of the magazine, adjacent to an opening 11 therein, and raised from said bottom by a spring 12. Through said opening ll'the nails can pass into a chute 13' when a door 14, pressed upwardly by a strong spring 15, is withdrawn by a link 16, connected, below saidchute, to a handle 17. By means of said chute the nails are discharged into the interior of a helix 18 of comparatively large rectangular wire, the coils of which are spaced apart from one another a sufficient distance only to permit the nails, but not their heads, to pass therethrough. Said helix 18 is secured at the front end to arms 19 extending outwardly from a disk 21 se-, cured to a'shaft 22, of whichone end passes through'the hub 23 of a bevel gear 24, rotatable in a bearing in the frame,6, said shaft 22 being rotatable with, but slidable in, said bevel gear by reason of a feather26 on shaft 22. The other end of the shaft is the 23 engaging a'keyway 27 in the slidably mountedin said frame 6.

. i Specification of Letters Patent. Patented Feb. 15,1916. 1 Application filed September 14, 1914. Serial No'. 861,518. i

The nails are prevented from dropping out of the rear end of the helix by an end wall 28, through an opening in which the chutev 13 extends, said end wall being secured between two collars 29 secured on the shaft. Said helix is rotated byreason of the bevel gear 24 meshing with a bevel gear 31 'on ashaft 32 slidable and rotatable in bearings 33, 34, respectively in arms 36, 37 extending from the frame 6 and the nailing guide 1 respectively. Said bevel gear 31' is rotatedby meansof a sprocket chain 38 meshing with asprocket wheel 39 on the shaft of'said bevel gear and also with the sprocket wheel 4l', on the rear rollershaft 3. By reason ofthe rotation of said helix the nails are causedto advance longitudinally therein, their. heads being withinthe helix and their stems hanging downwardly therefrom. Some of the nails, however, when without projecting between the coils thereof. In order to insure that all nails will so project between the coils before arriving at the farther end of the helix,'there are discharged from the chute into the helix, lie against the inner surface of the helix part only of ,a nail lying longitudinally within the helix, and, in the further movementof the helix, to carry said part of the nail forwardly therewith while the other part of the nail drops by gravity and thus to cause the nail to assume a direction transverse to the helix and finally toidrop be tween its coils. There is also provided a dis'lodger 43, consisting of a belt 44 carrying projecting prongs46, which extend between 'saidcoils, said belt travelingaround wheels 47 the shafts of which rotate in bearings in plates 48. supported by arms 49 extending from the standards 2. Said nails,'as they are carried forward by. the bars :42, strike against the prongs andzare turned into a position transverse tothe helix, in which position they can drop between its coils.

Since it is thepracticein nailing hard wood floors to drive two nails close together on opposite sides of the adjoining edges of the boards, as shown at 51 in Fig. 4, it is desirable in a machine of this characterthat theinails shouldbe advanced along two paths or channels side by side. In order to deliver the nails into said channels from the helix I provide the following mechanism: In the rear face of the disk 21 is formed a cam groove 52 in the shape of a closed curve having two complete turns, or loops, said loops crossing each other, one loop 53 being much smaller than, and within, the other loop 5%. The smaller loop 53 decreases in its depth from its juncture with. the larger loop, while the larger loop 54 increases in depth. In said cam groove is a. key 55 (see Figs. 1 and 3) which is secured to a holder 56 secured on the frame 6. As the helix and the'hub connected thereto rotate, said key travels first in one loop of the groove and then in the other. A spring 57, compressed between the rear end of the helix and the frame 6, presses said helix forwardly so as to cause the key to always engage the bottom of the groove. When it engages the smaller and shallower loop of the groove, the helix is pushed rearwardly against the pressure of the spring, and when it engages the larger and deeper loop of the groove, the helix can advance forward as far as permitted by the engagement of the key. The groove is so arranged with ref-. erence to the coil, of the helix that nails drop from. said helix only when the key is at the deepest. or at the shallowest part of the groove, and at such points the nails are'then immediately over one or the other of two slots 58 in a plate 59 (see Figs. 1, 3 and 5) secured to a .guideway 61 attached, by means of screws 62, tothe nailing guide 1. Said plate 59 has on each side of each guide-way raised portions 63,. which insure the nails entering, said slots 58, and being suspended therefrom, the heads of the nails being too large topass through the slots. In said nailing guide are vertical. rods 64:, which are reciprocable vertically in holes in the nailing guide, and are secured. at their upper ends to a head .66 adapted to receive the blow of a hammer, said head being also secured to the upper ends of rods 67 having heads 68 reciprocable in vertical sockets 69 in the nailing guide, springs 71. in said sockets normally raising said rods 67. The upper surfaceof the nailing guide is covered with india rubber or other yielding material to receive the impact of the head,

The lower portion in the guide-way 61 forms with the nailing guide vertical channels 7 2 of just sufiicient width to receive the headof a nail, and the upper portion of the guide is formed with curved upper surfaces 7 3 adapted to guide the pointed ends of the nails as the nailsapproach thelower end of the slots and fall through enlargements 74: in said lower ends, the heads of said nails,

after they have thus fallen through, abut-' ting against the extreme lower portions of the rods 6i, while the lower portions of the succeeding nails abut against the heads of the nails which are in the position to be:

dr'ven on the next stroke of the hammer.

As each pair of nails is driven into the wood,

and the rods ca return under the pressure of the springs, the pointed ends of thenext succeeding pair of nails first slide down into the vertical channels 72, until their heads are below the rods 6- whereupon they assume a.

vertical position. beneath said rods ready .to;

be driven into the wood upon the next succeeding blow of the hammer.

In case the nailer, finds that the nailsEare being advanced too rapidly by the helix, he presses with his thumb upon-one end of a s rin JIGSSQCI lever/76 fulcrumed noon the a l. l

nailing guide, the other. end of which lever engages a head 77 on the shaft 32 of the bevel gear 31, thus withdrawing said bevel gear from the bevel gear 2 1, so that the helix no longer rotates.

I cla1m:-

1. In anailing machine, a rotatable helix for arranging the nails and having coils spaced apart sufficiently to permit the nails, but not their heads, to pass therebetween, and means for feeding nails into the interior of the helix, said interior being free from obstructions which would prevent the nails so fed from lying within said helix and in a helix each adapted in the rotary movement 5 of the helix to impinge upon a nail lying lengthwise thereinto turn said nail in a ,direction extending transversely of the helix.

3. Ina nailing machine, a rotatablehelix for feeding the nails, the coils of the helix being spaced apart sufficiently to permit the nails, but not their heads, to pass therebetween, and prOJectrons extending inwardly at suitable intervals fromthe helix toagi- .tate the nails therein.

4i. Ina nailingmachme, a rotatablehellx for feeding the nails, and adislodger outside the helix andhaving; prongs extending be-v tween the coils of the helix. r

5. In a nailing'machine, a rotatablehelix Y for feeding the nalls, and a dlslodger outside the helix consisting of a movable suitablysupported endless belt and having prongs extending-between thecoils of the helix.

6. In a nail feeding and separating mechanism, a. pair of channels or rac-eways, a 2

magazine for the nails, an automaticallyoperated separating and feeding devlce to which said fnails are delivered from the magazine, and means for feeding the nails from said device alternately into said channels.

7 In a nail feeding and separating mechanism, a pair of channels or raceWays, a magazine for the nails, means for feeding the nails from said magazine alternately into said channels comprising a helix the coils of Which are spaced apart sufiiciently to per mit the nails, but not their heads, to pass therebetween, and means for imparting a reciprocating motion to said helix.

8. In a machine for feeding nails and for driving them into a floor, a pair of channels or raceways, a magazine for the nails, means for feeding the nails from said magazine alternately into said channels comprising a helix the coils of Which are spaced apart sufliciently to permit the nails, but not their heads, to pass therebetween, and means for" imparting a reciprocating motion to said helix, a roller carried on the magazine frame and adapted to roll upon the floor, an operative connection between said roller and last named means, and means for breaking said operative connection.

In testimony whereof I have hereunto set my hand in the Witnesses. v a

HENRY W. YORK.

Witnesses: V

F. M. WRIGHT,

D. B. RICHARDS.

Copies of this patent may be obtained for five cents each, by addressing the Commissioner of Patents,

Washington, D. G. 7

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